I have raised the voltage to 1.012V (from default 1.000V), so just one step, and in last 4-5 days I have not experianced any downclocks or error WUs (only three completed, marked as invalid WU, 160+ completed and verified WUs, and many still pending results).

So it seems that just the slight voltage increase could help. Seems that on my particular Gigabyte 560Ti-OC factory overclock was a bit overoptimistic in terms of GPU voltage needed for default 900MHz, 1.000V works fine in any game (even 920MHz is ok for games), but not ok for lunatic x38 app, which required at least 1.012V for my particular card/gpu on stock 900MHz.

I have raised the voltage to 1.012V (from default 1.000V), so just one step, and in last 4-5 days I have not experianced any downclocks or error WUs (only three completed, marked as invalid WU, 160+ completed and verified WUs, and many still pending results).

So it seems that just the slight voltage increase could help. Seems that on my particular Gigabyte 560Ti-OC factory overclock was a bit overoptimistic in terms of GPU voltage needed for default 900MHz, 1.000V works fine in any game (even 920MHz is ok for games), but not ok for lunatic x38 app, which required at least 1.012V for my particular card/gpu on stock 900MHz.

Yep. Mine need 1.062V at least or they start throwing errors.

It's interesting to me that these cards need more juice than their stock settings on some machines but on others, no worries.

Because the stock frequencies of the 560ti aren't that much above those of the 460 (while the latter has fewer cores - I read 7% in computer magazine I read), manufacturers feel a greater need to play with the clock speeds to tempt consumers with OCd versions, and on top of thise maybe these cards are just a bit more sensitve when overclocked/what voltages are set at or the manufacturers aren't getting the settings quite right... and when you run a GPU, like a CPU, at full load, as when crunching for SETI, those frequencies and voltages have to be just right for things to remain stable.

Fluctuations elsewhere in the system, such as in the power from the PSU can easily prevent an overclock from being stable, and manufacturers of GPUs don't know what our PSUs are like - so personally I don't like pre-overclocked GPUs... but I like the ones with decent coolers and it seem you can't have the latter without the former.

We don't get pre-overclocked CPUs so it annoys me a little that the market is flooded with pre-overclocked GPUs, just to persuade consumers.Brian.

I'm noticing a trend that seems to suggest that there's something buggy with the 560ti card as a whole, or at least insofar as its interactions with SETI/Lunatics.

Please take a moment to fill out the information below so we can help the Lunatics builders hammer out this problem. The problem will likely become exaserbated eventually as the 560ti prices continue to become more affordable for more crunchers.

1. Please list your system specs. PSU, GPU's(their make and model), OS, CPU and so forth.
2. Which version of Lunatics are you running?
3. Are you experiencing errors or downclocking? If so, please explain/expand on what issues you are having. For example your cards downclock every 1 hour and in doing so, throw an error message.
4. At what temps are your cards running at full load?
5. What clocks/voltage are you running on your cards?
6. Have you set your NVIDIA power performance to 'max performance' rather than 'adaptive'?
7. Have you disabled hardware acceleration in your web browser?

Errors can happen when PC is running without other use.
Seem to start with .38 + 27X.xx drivers
Have MSI Afterburner installed with above profiles. Have upped fan speed to keep card cooler. Fan speed a few % below temp eg 51%/55C
I only run one wu at a time. Haven't got round to the edit to make it run 2 [was unsure if t could. GPU usage 70-90% latter being peaks, average about 50%
N.B. F@H runs 98-99% & use more memory.

Thought it would be a driver/optimised client issue rather than power as F@H stresses the card more.

Errors can happen when PC is running without other use.
Seem to start with .38 + 27X.xx drivers
Have MSI Afterburner installed with above profiles.

I am also using a MSI Twin Frozr 560Ti, with no downclocking issues (unless I overclock). The only difference (besides not using MSI Afterburner) really is I'm using nvidia 270.61 drivers, so you might want to try that instead?Brian.

Yours should read one. Change it to .5 for two or .33 for three at a time. If you are running a 64 bit system then you should find six instances of <count> if you have a 32 bit system there will only be three. Change them all. This is for the MB CUDA work. If you want to try to run AP on your NV GPUs then come back and ask about that and we will show you how to change that.

Yours should read one. Change it to .5 for two or .33 for three at a time. If you are running a 64 bit system then you should find six instances of <count> if you have a 32 bit system there will only be three. Change them all. This is for the MB CUDA work. If you want to try to run AP on your NV GPUs then come back and ask about that and we will show you how to change that.

ok thx :)Joined Seti@home on 20 June 1999 (id:797875)
Made This1 to Join the Eve Team